BUDAPEST — Péter Magyar was sworn in as prime minister of Hungary on Saturday in Budapest, ending Viktor Orbán's 16-year rule. As Magyar took office, the EU flag was returned to parliament and the European anthem Ode to Joy was played in the chamber.

Tens of thousands of people descended on the parliament to attend the inauguration ceremony and a dance party that followed. Singer Jalja performed at the ceremony. The Tisza party, which Magyar leads, won a landslide victory last month.

Following the swearing-in, Zsolt Hegedűs, who is tipped to be the new health minister, danced in front of Budapest's parliament building. Images of his dance moves, complete with air guitar, went viral again. Hegedűs had first attracted public attention during last month's celebration of the Tisza party's victory, when he broke into an impromptu dance that went viral. In the lead-up to Saturday's inauguration, his phone began buzzing as the Tisza party prepared to be sworn in.

Hegedűs, 56, is an internationally recognised orthopaedic surgeon who spent more than ten years working for the NHS in the United Kingdom. He is expected to be formally proposed as Hungary's health minister.

"I didn't want to let down the people," Hegedűs said of his decision to dance again outside parliament. "I'm on an emotional rollercoaster that's still hard to wrap my head around," he said in an interview.

Hegedűs said he intended to channel the attention into public health messaging. "It's not that I'm going to start dancing in parliament, but I want to use this popularity to encourage people to adopt a health-conscious lifestyle and focus on mental wellbeing," he said. "Go outside, dance, be together. Let's stop fiddling with our gadgets. Let's enjoy the moment."